/usr/lib/nodejs/ansi-regex/index.js is in node-ansi-regex 2.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | 'use strict';
module.exports = function () {
return /[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g;
};
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